baber/WOPTO huggingface dataset:
Patent GB-575534-A (GB)
Title: Improvements in or relating to antennas for ultra high frequency electromagnetic waves
IPC: H01Q13/24
Filed: 1944-03-22
Abstract: 575,534. Wave guides. WESTERN ELECTRIC CO., Inc. March 22, 1944, No. 5389. Convention date, Dec. 17, 1942. [Class 40 (v)] An antenna for ultra-high-frequency waves comprises an antenna element consisting of an unsheathed dielectric rod, a portion of the length of which has a tapering cross-sectional area and another portion of uniform crosssectional area. Fig. 1 shows an antenna having a good end-on characteristic and comprising a rod 1 of low-loss dielectric such as polystyrene mounted in a holder 3 which serves as a wave guide for connection to a translating device, not shown. The rod is six wavelengths long and has an electric plane transverse dimension a which is uniform throughout the length of the rod. The magnetic plane transverse dimension b tapers uniformly from the fixed end 4 of the rod to a point 5 and is then uniform from point 5 to the free end 2 of the rod, which is rounded. In the example shown, the tapered part 7 is somewhat longer than the uniform part 8. With this configuration, the phase velocity of H11 waves in the rod varies from point' to point in such a way as to give an improved end-on characteristic. A similar rod having a circular cross-section, and with tapered and uniform parts of unequal length is also described (Fig. 2, not shown). Fig. 3 shows a dielectric rod of circular cross-section in which the tapered part 7 is equal in length to the uniform part 8. The rod is 7.23 wavelengths long. This configuration gives the best characteristic. The characteristics of the three embodiments as compared with known antenna of the dielectric rod type are described (Figs. 5-8, not shown). Fig. 9 shows a mounting 42 for coupling a circular polystyrene antenna rod 10 to a coaxial line 45, 46. Inner conductor 46 is connected to an exciter wire 49 fixed diametrically in the butt of rod 10 and extending into a tuning stub 48 having an adjustable piston 55. Wire 49 is connected at 52 to the mounting 42. The length of wire 49 between 52 and 55 serves to terminate line 45, 46 in its characteristic impedance. Waves supplied by the coaxial line to the exciter wire 49 establish in rod 10 transverse electric waves linearly polarized in the plane of wire 10. The antenna will also serve to receive wave components similarly polarized. For use with circularly polarized waves in rod 10, the necessary conversion is effected by a pair of critically spaced polar reactances in the form of wires 56 arranged at 45 degrees to wire 49. U.S.A. Specification 2,236,393 is referred to.
Patent GB-242497-A (GB)
Title: Improved miners tea can
IPC: B65D47/12
Filed: 1925-02-27
Abstract: 242,497. George, H. A. Feb. 27, 1925. Made in separate parts to facilitate cleaning.-The ovalshaped body e, Fig. 3, of a miner's tea can terminates in an externally threaded cylindrical portion f over which the threaded portion d, Fig. 2, of the neck a is adapted to fit, a washer g on the neck engaging over the end of the part f.
Patent GB-159189-A (GB)
Title: Improvements in spur plates for horseshoes
IPC: A01L3/00
Filed: 1920-04-27
Abstract: 159,189. Knowles, J. S., (Representative of Capewell, G. J.). April 28, 1919, [Convention date]. Fixing.-A removable horseshoe 10 is adapted to be attached to the hoof by means of cupped spur-plates 12 of spring steel, provided with teeth 14 at the lower edge and mounted on clips 11 extending upwardly from the sides of the shoe, the curve of the plate in either direction being of less radius than that of the hoof to provide for resilient action between the shoe and the hoof. The spur-plates may be formed rectangular or circular in shape and slotted to provide branches capable of separate resilient action.
Patent GB-1528236-A (GB)
Title: Refuse sorting apparatus
IPC: B03B9/06
Filed: 1976-02-12
Abstract: 1528236 Sorting refuse KRAUSS-MAFFEI AG 12 Feb 1976 [5 March 1975] 05579/76 Heading B2H  Apparatus for sorting refuse comprises a conveyor belt 2, a plurality of sensors 16 arranged above and below the belt, and a plurality of selection devices 19, 20 and 21 arranged one behind the other along the direction of movement of the belt and controlled in dependence on the identification information provided by the sensors. The row of sensors 16 extends across the whole width of the belt as do the rows of compressed air nozzles 19, 20 and 21. Above the conveyor belt 2 are three further conveyor belts 23, 24 and 25, all the belts having perforations 15 and suction applied to them by pumps 13 and 29. Comminuted paper refuse is fed onto the belt 2 and is moved past the sensors 16. Light from a source 17 is reflected by the paper on the belt and received by a sensor 16 which opens one of the nozzles 19, 20 or 21 according to the colour of the reflected light when the piece of refuse scanned by the sensor is moving over this nozzle. Thus the relevent refuse particle is blown against one of the conveyors 23, 24 or 25, held fast thereon by the vacuum and transported away. In a modification, the conveyors 23, 24 and 25 are below the conveyor 2 and the nozzles 19, 20, 21 are directed downwardly. To separate synthetic plastics from paper, the refuse fed to the hopper 8 is passed through an electrostatic field so that only the plastics becomes charged, the sensors 16 in this case being electrometers.
Patent GB-730187-A (GB)
Title: Improvements in vapour pressure thermometers
IPC: G01K5/32
Filed: 1952-03-04
Abstract: 730,187. Thermometers. FOXBORO CO. March 4, 1952 [March 14, 1951], No. 5658/52. Class 97 (3). [Also in Group XIII] A vapour pressure thermometric system comprises a relatively long, small diameter well 10 which may be inserted in a chamber 11 so that the system can be used to indicate the temperature therewithin, and a small diameter tube 12 connecting the well with a Bourdon tube 14 adapted to move a pointer 16 over a temperature scale 17. The system contains a mixture of mutually miscible liquids, each of which preferably obeys Raoult's law; one liquid (e.g. propane) is relatively more volatile than the other (e.g. dodecane) and has a vapour pressure which varies non-linearly with temperature. The vapour space is large as compared with the space occupied by the liquid mixture, and the relative and absolute quantities of the two liquids is such that the vapour pressure in the system varies substantially linearly with the temperature. In the well 10 is provided a tubular wick 19 having a large surface area in relation to its thickness so that reversion from vapour to liquid phase is rapid. This wick is held against the wall of the well by a helical spring 20.
Patent GB-377130-A (GB)
Title: Double twist twisting spindle
IPC: C07D231/48
Filed: 1932-02-25
Abstract: 377,130. Twisting apparatus for imparting two twists per revolution. BARMER MASCHINENFABRIK AKT.-GES., 12, Mohrenstrasse, Oberbarmen, Wuppertal, Germany. Feb. 25, 1932, No. 5675. Convention date, Oct. 30, 1931. Addition to 377,113. [Class 120 (ii).] In the twisting apparatus described in the parent Specification, an insert member 9 adapted to be attached to the stationary guiding element 7 is provided for use when a thicker thread is being twisted and, consequently, a larger bobbin is used.
Patent GB-107565-A (GB)
Title: Improvements in the Construction of Hollow Metal Derricks.
Inventor: ASHBY EDWARD WILKINSON
IPC: B63B15/00
Filed: 1917-04-26
Abstract: 107,565. Ashby, E. W. April 26, 1917. Jib cranes.-A hollow metal derrick is built up of plates 2, Fig. 2, connected by plate straps 6 and by rivets 4, Fig. 1. The heel and the head of the derrick are formed with centre plates let in between the flanges 3. Each plate 2 may be bent to form one half of a hexagon instead of a square. 25
Patent GB-1117842-A (GB)
Title: Improvements in or relating to methods for determining the structural nature of media by sound reflections
Inventor: RICHTER HANS-ULRICH
IPC: G01N29/11
Filed: 1966-02-10
Abstract: 1,117,842. Determining structural nature acoustically; cathode-ray tube circuits. SCHWERMASCHINENBAU " KARL LIEBKNECHT" MAGDEBURG VEB. 10 Feb., 1966, No. 5919/66. Headings H4D and H4T. The spacial distribution of grains of various size of a crystalline solid (12, Figs. 1 and 3), is indicated on a cathode-ray tube by modulating the beam intensity in accordance with echoes received by an electro-acoustic transducer 6 supplied with pulses of sonic or ultrasonic frequency manually adjustable by calibrated means (4, 4 : 1, Fig. 1) or continuously wobbled by motor means (13, Fig. 3) the beam being deflected in the horizontal direction by potentiometer means 6.1 synchronously with movement of the transducer along the surface of the solid and in the vertical direction by a sawtooth wave from generator 3 triggered by pulse generator 1 which pulses the transmitter 2. Thus, in the arrangement of Fig. 1, the display comprises echoes (11, Fig. 2), due to reflections by grains having a size which preferentially reflects the particular frequency manually selected, in a horizontal position corresponding to their actual position in the solid, their size being determined from the calibration means (4.1). In the case of the Fig. 3 arrangement the relative grain size is indicated directly (11, Fig. 4) by varying the beam diameter under the control of a voltage from a rotating potentiometer 7 driven by motor 13 and supplied to the focusing coil 8.4. In both displays echoes 9 and 10 appertaining respectively to the front and rear surface (14) of the solid are produced.
Patent GB-471129-A (GB)
Title: Improvements in or relating to electric calbes
IPC: H01B11/18
Filed: 1936-02-27
Abstract: 471,129. Cables. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and WITT, B. J. Feb. 27, 1936, No. 5934. [Class 36] A high-frequency cable comprises a conductor 2 supported from an outer coaxial conductor 1 by spaced metal rods 3 which extend diametrically across the cable and through holes 4, 5 in the outer conductor, the ends of the rods carrying nuts 8, 9 which bear on insulators 6, 7 seated in the holes 4, 5. The holes 4, 5 are of such a size that they increase in inductance of the outer conductor at each supporting point by such an extent as to counterbalance the increase in capacity due to the support, so that the ratio of inductance to capacity is maintained uniform along the cable. Successive supporting rods may be arranged at rightangles. Specification 464,825 is.referred to.
Patent GB-608537-A (GB)
Title: Improvements in or relating to apparatus adapted for use in the treatment of a workpiece with a high-frequency electrostatic field
IPC: H05B6/54
Filed: 1946-02-26
Abstract: 608,537. High - frequency electrodes. BRITISH UNITED SHOE MACHINERY CO., Ltd., and LEAHY, J. F. Feb. 26, 1946, Nos. 5970 and 5971. Convention dates Feb. 28, 1945, and June 4, 1945. [Class 39(iii)] An electrode construction for highfrequency electrostatic fields has the conductor partly surrounded by an insulating support, and a cover for one conductor face having a substantially higher dielectric constant than that of the material of the support. In a preferred example, a rubber pad 10 contains rectangular conductors 18, 20 connected to opposite sides of a highfrequency supply, the conductors being covered by a vulcanized rubber compound 24 of materials detailed in the Specification. Specifications 446,660, [Group VI], 513,521, [Group IV] and 540,494 are referred to.
Patent GB-1153844-A (GB)
Title: Improvements in or relating to Attaching Electric Cable Cores to Drums
IPC: H01F41/12
Filed: 1968-02-07
Abstract: 1,153,844. Clamping cable ends to reels. PIRELLI S.p.A. 7 Feb., 1968 [25 March, 1967], No. 5977/68. Heading B8M. [Also in Division H2] Apparatus for attaching a cable end to a drum comprises a clamp device 2 for engagement with a cable end 1, means for making electrical contact with the cable end when engaged with the clamp device, the clamp device being pivotally mounted on a cable drum 3 about an axis parallel to the drum axis, and means preventing removal of the cable end in a direction tangential to the drum surface but permitting removal thereof when the clamp device is rotated to move the cable end radially outwards. The clamp device 2 comprises an elbow-shaped member, one arm 12 being connected to an electrical conductor 15 and the other arm 11 mating with the cable end. The arm 11 has a socket 10 in which a plurality of laminµ 18 extend parallel to the axis of the socket and are anchored at the closed end of the socket, spring elements 22 being provided to urge the laminµ into contact with the cable end 1 and extension 131 of the arm 11, thereby effecting electrical contact between the clamp device and the cable end. A plug 5 in the cable end 1 is provided with a groove 6 and collar 7, the edge of the collar remote from the groove being rounded. Mounted on the drum 3 there is a latch member 31 which is spring biased radially outwards from the drum surface, the outward extension being limited by a stop 35. The side 36 of the latch 31 facing the cable end 1 is inclined so that contact with the rounded edge of the collar 7 depresses the latch 31 which is then released to engage the groove 6 and prevent removal of the cable end 1 from the clamp 2. The drum 3 preferably has a flat recessed portion 3<SP>1</SP> for the positioning of the cable end. When cable is unwound from the drum 3, the clamp 2 is pivoted about shaft 16 to lift the plug 5 clear of the latch member 31 and the cable end 1 is readily detached from the socket 10. The device is most advantageously used in the manufacture of oil-filled cable cores in which the cable core is wound on the drum 3 which is immersed in a bath of oil and is thereafter removed and passed to a sheathing press without contact by air.
Patent GB-1135951-A (GB)
Title: Phosphoric acid
Inventor: ROBINSON NORMAN
IPC: C01B25/22
Filed: 1965-02-12
Abstract: 1,135,951. Phosphoric acid. FISONS FERTILIZERS Ltd. 24 Jan., 1966 [12 Feb., 1965; 24 July, 1965; 30 Nov., 1965], Nos. 6101/65, 31674/65 and 50871/65. Heading C1A. Phosphoric acid having a concentration of at least 40% P 2 O 5  by wt. is prepared by a continuous process which comprises, in a first stage, reacting mineral phosphate with H 3 PO 4  in the presence of an excess of calcium ions, said H 3 PO 4  containing 1-3% by wt. of dissolved sulphate ion; in a second stage, reacting the product of the first stage with H 2 SO 4  to give H 3 PO 4  containing at least 40% P 2 O 5  and CaSO 4 .¢H 2 O, the H 2 SO 4  being used in excess of that required to invert the calcium content of the mineral phosphate feed into C 2 SO 4 ; and, in a third stage, separating the H 3 PO 4  from the CaSO 4 À¢H 2 O, and recovering at least part of the H 3 PO 4  as product, there being recycled to the first stage phosphoric acid slurry from the second stage. Preferably the starting H 3 PO 4  contains at least 37% by wt. P 2 O 5 and is used in amount at least 9 parts by weight for every part by wt. of calcium fed as mineral phosphate. The temperature of the first and second stages may be 80-115‹ C.
Patent GB-1485904-A (GB)
Title: Side face sealing in a hydraulic gear pump
IPC: F04C2/08
Filed: 1975-02-13
Abstract: 1485904 Positive-displacement rotary machines PLESSEY CO Ltd 30 Jan 1976 [13 Feb 1975] 6101/75 Heading F1F A side face seal 20 for sealing the ends of the intermeshing gears of a gear-pump has its surface which seals against the gears provided with open channels 29, 30 which connect gear shaft receiving apertures 22, 24 to the inlet side of the pump, open channels 32, 34 extending towards each other from the outlet and inlet sides, respectively, and an elongate area 26 inclined to the axis of the channels 32, 34 for contacting the gears in their intermeshing zone to prevent leakage from the outlet to the inlet side. The provision of the channels 32, 34, which are deeper than the channels 28, 30 is stated to relieve the pressure in the intermeshing zone and thereby reduce pump noise. Channels 28, 30 allow pumped fluid to flow between the inlet and the apertures 22, 24 for lubricating the shafts of the gears. The sealing surface may be formed on the surface of a casing for the gears or on a member separate from the casing and pressure loaded.
Patent GB-608686-A (GB)
Title: Improvements in carpet sweepers
IPC: A47L11/33
Filed: 1946-02-27
Abstract: 608,686. Carpet sweepers. ENTWISLE & KENYON, Ltd., and REDFEARN, J. P. Feb. 27, 1946, No. 6104. [Class 138 (i)] In a carpet sweeper of the kind in which a casing A encloses the top, sides and ends of the usual operative parts comprising the wheels D, brush E, wheel axles d, brush-drive springs d<SP>1</SP>, dust pans c, and springs c<SP>1</SP> controlling the dust pans, the operative parts, or such parts except the brush, are carried by supporting-means which with the operative parts form a removable unit, the only attaching means between the unit and the casing being those necessary for securing the supporting-means thereto, whereby the casing may have an unbroken or substantially unbroken outer surface. The supporting-means comprises two plates B, B<SP>1</SP>, the distance between which is substantially equal to the length of the pans C, space for the wheels being allowed between the plates and casing. The dust pans C are pivoted at c to the plates B, B<SP>1</SP> which are recessed to accommodate the springs c<SP>1</SP>, or distance pieces may be provided. As shown, the axles d extend from end to end of the machine and pass through slots in the plates B<SP>1</SP>, B<SP>2</SP> where stub axles are employed, and the springs supporting them are attached to the outer surfaces of the plates. Each plate Bl, B<SP>2</SP> has a slot B for the brush shaft which may be pivoted to the casing as described in Specification 474,619, or pivoted to brackets carried on the outsides of the plates. The unit may be secured in the casing by projections a on the underside of the casing top and flanged projections a<SP>1</SP> on the sides, the plates B, B<SP>1</SP> having lugs b<SP>1</SP> for attachment to the projections by screws; alternatively, the edges of the plates may be received in grooves on the casing. The plates B<SP>1</SP>, B<SP>2</SP> may be made of aluminium alloy or a synthetic resin and the casing A of a synthetic resin.
Patent GB-1245159-A (GB)
Title: Low-distortion coaxial cable
IPC: H01B11/18
Filed: 1969-02-05
Abstract: 1,245,159. Coaxial cables. INDUSTRIE PIRELLI S.p.A. 5 Feb., 1969 [23 Feb., 1968], No. 6107/69. Heading H1A. A telecommunication coaxial cable for the transmission with low-amplitude distortion of pulse code modulated signals, comprising two thin coaxial conductive films continuous longitudinally of the cable and separated by an intervening dielectric and carried by respective supports of conductive material whose electrical conductivity compared with said films is relatively low wherein the thickness of said films is not greater than 0À1 mm. The conductive films may be of copper or aluminium and the material of low conductivity is of iron. In a preferred embodiment of the cable, an inner support and a film together form a wire while an outer support and a film forms a tape.
Patent GB-549302-A (GB)
Title: Improvements in or relating to reciprocating pumps
IPC: F04B1/32
Filed: 1941-05-12
Abstract: 549,302. Swash-plate pumps. RUBERY OWEN MESSIER, Ltd., CONWAY, H. G., and HADEKEL, R. May 12, 1941, No. 6139. [Class 102 (i)] In a reciprocating pump one or more pistons 22 are reciprocated in one or more cylinders 16 disposed eccentrically to an axis of rotation by means of two swash-plates 25, 27 which are pivotally mounted to move in unison about axes 26, 28 off-set from the centre-line of the pump so that the delivery pressure acting against a spring 30 tends to reduce the inclination of the swash-plates. The spring 30 is pivoted to an adjustable anchorage point 33 and is attached to the eye 32 of an ear 31 on the swash-plate 27 so that its radius of action about the pivot 28 is reduced as the inclination of the swash-plate is reduced. The swashplates are connected by a link 29, and a drain 47 is provided for leakage. The ends of the pistons 22 and the piston-rods 23 are rounded, and their radii of curvature equal to the distances by which the centres 26, 28 are off-set from the faces of the plates 25, 27. These rounded ends may engage in similarly recessed washers on the swash-plates.
Patent GB-557266-A (GB)
Title: Improvements in and relating to acoustic systems and apparatus
IPC: H04R23/00
Filed: 1942-05-09
Abstract: 557,266. Oscillographs. ALLAN, W. H. May 9, 1942, No. 6298. [Class 37] [Also in Group XXXIX] For recording sound, a diaphragm 2, 4 vibrated directly by the sound waves or indirectly through the electromagnetic means, carries a mirror 15 which reflects and focuses light from a source 16 on to a recording film 17. The diaphragm consists of a rigid control portion 4 with a flexible surround 2, preferably of rubber, and forms part of the outer wall of a sealed gas-tight enclosure 1 in which the pressure is sub-atmospheric. Specification 131,041, [Class 40 (iv)], is referred to.
Patent GB-1496036-A (GB)
Title: Polysiloxane coating compositions
IPC: C08G63/00
Filed: 1975-02-14
Abstract: 1496036 Coating compositions BAYER AG 14 Feb 1975 [16 Feb 1974] 6344/75 Heading C3R A coating composition comprises a mixture containing, by weight, 5-30 parts benzoguanamine aminoplast and 95-70 parts polyester (E) modified with 1-11% polysiloxanes (S), by wt. based on the modified polyester; where (E) contains residues of: dicarboxylic acids being (A) aromatic and, optionally, cycloaliphatic, and (B) aliphatic; and polyhydric alcohols being diols (D) and optionally triols (T); where 100-40% moles (A) are o-phthalic acid and 85-100% moles of the polyols are (D) and 0-15% moles are (T). The acids may contain 85-50% moles (A) and 15-50% moles (B). (E) and (S) may be reacted at 80-200 C., optionally in the presence of a catalyst, e.g. a metal salt. The coating composition may be used as a solution in organic solvent(s). Use.-Coating metal tape or sheet, e.g. steel, galvanized steel or Al.
Patent GB-693004-A (GB)
Title: Improvements in fuse carriers for electric fuses
Inventor: DONOVAN JOHN WALTER
IPC: H01H85/56
Filed: 1950-03-15
Abstract: 693,004. Fusible cut-outs. DONOVAN ELECTRICAL CO., Ltd. March 14, 1951 [March 15, 1950], No. 6438/50. Class 38 (i). A cartridge fuse carrier incorporates two sections a normally urged apart by springs b whereby it may be interlocked with a fixed casing f. The casing, carrying fixed contacts g, has slots f<SP>1</SP> into which snap teeth e on the carrier sections, which are slidable on a guide bar a<SP>1</SP> which carries the carrier contacts c and the cartridge fuse d.
Patent GB-927595-A (GB)
Title: Improved dental drilling apparatus
Inventor: HARGREAVES GEOFFREY WILLIAM
IPC: A61C3/02
Filed: 1961-02-22
Abstract: 927,595. Dentistry. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Feb. 22, 1962 [Feb. 22, 1961], No. 6459/61. Class 81 (2). A dental burr has a hollow stem 22 leading to a nozzle 24 located within a chamber 26 in a hollow cutting head 23. Cooling gas, such as carbon dioxide or nitrous oxide, is supplied under pressure to the bore of the stem and escapes into the chamber 26 where the resultant expansion results in cooling of the cutting head. The gas finally escapes through passages 27 in a direction away from the tooth. The burr is shown fitted in a handpiece in which a turbine 17 is supplied with compressed air through a duct 14 while compressed cooling gas is supplied through a duct 15 to the upper end of the burr. In a modified form of burr, see Fig. 2 (not shown), the shank and cutting head are joined by mating conical surfaces and the gas escapes from the expansion chamber through grooves cut in the face of the shank.